I have owned many convertible cars in my life (Porsche, Ferrari, Aston) and none are as rewarding as the M3. The engine is a true masterpiece. The SMG is brillant. I almost went with a manual due to a bit of negative press about the SMG but I am glad I got the SMG. It is absolutely outstanding. Auto boxes with shift modes are not even close. The car handles very well for a open top car. I purchased the hardtop and it looks fantastic (even better than the coupe) and adds a bit more rigidity. I highly recommend this car and I believe the 6 cyclinder will become a classic. This is a real crowd pleaser as well and will certainly get you noticed
Engine, Engine, Engine, SMG, LOOKS and handling. Surprisingly good gas mileage. Engine note.
As with any convertible if they could increase body rigidity that would be a plus.